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| Since it can be separated from a socket, you can do panel work even without a conditioner.
Maintenance is easy because it can be exchanged simply by plugging or unplugging the main unit. Another advantage is that you don't have to perform any wiring. |
| Possible to mount in a rack, on a DIN rail, or on a wall.
Signals can be checked when instruments are running, or with live wires (assuming the operator has experience checking signals). |
Generally these can be used for DCS connections.
The following are the advantages:
-16 units can be housed per nest.
-Checks can be made actively.
-Card configuration allows easy insertion/removal.
-One source can power all units together. |
| This is specified for current pulse input. Resistance values specified depends on the specification of the transmitter (mainly the rated current of the open collector). The internal load resistance are 200 ohm, 500 ohm, and 1 kohm, and power supply supplied from the transmitter is 0.5 W or 2 W depending on its specifications. (The VJP8 is attached externally. 200 ohm (0.5 W) of the external resistance is available.) |
| For example, if the specifications of the open collector on the output side indicate 30 V/30 mA, use an internal load resistance of 1 kohm (transmitter power supply 24 V). This results in a 0/24 mA current pulse. |
| It is 250 ohm (4-20 mADC). However, certain computing units also have 100 ohm input. |
IPTS-68: An international standard from 1968 in which R100/R0=1.2850. JIS adopted the standard between 1989-1997, but it is not presently used.
ITS90: An international standard from 1990 in which R100/R0=1.3851. JIS has adopted the standard from 1997 to the present.
JPt100 is a Japanese standard that was cancelled in 1989, in which R100/R0=1.3916. |
| This is the input impedance of an instrument that can be connected to the output terminals, or the receiving resistance when the conditioner is outputting current. The wiring resistance must be added and taken into account. |
| For most current input type instruments, the input impedance is 250 ohm. The corresponding allowable load impedance for current output is 750 ohm, therefore the max. number of connectable units is 3. |
| For most voltage input type instruments, the input impedance is 1 Mohm. The corresponding allowable load impedance for voltage output is 2 kohm, therefore the max. number of connectable units is 500. |
| Because it is an open collector, you need to add a power supply.
Be sure to pay attention to the maximum allowable load when doing so. |
| It would be: 100×1000/10/H = 10000/3600 Hz = 2.778 Hz (The number of significant figures is 4.) |
| It is over 106% of the output range when UP, and less than -6% when DOWN. |
| This is the time required to reach an output of 63% with 10=<90% step input. |
| Multiply the response time at 63% by 2.3 to get the equivalent response time at 90%. |
- For gas flow temperature/pressure compensation with differential pressure type (orifice, venturi) variable area flowmeters, the density equation is within a square root. Use the MXT-R or WTX_-R computing unit.
- For gas flow temperature/pressure compensation with vortex type flowmeters, the density equation uses standard multiplication/division. Use the MXT-T or WTX_-T computing unit.
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- Use a free program model computing unit for density compensation of saturated steam, then use an FX to convert pressure. Use the MXT-A computing unit.
- Use a free program model computing unit for density compensation of superheated steam, then use an FX to convert temperature and pressure, or calculated it with the y=mx+b equation. Use the MXT-A computing unit.
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| Total resistance value >= zero side resistance + span resistance. |
| If input is broken it scales off to the upper or lower limit, but there is no rule as to which. |
| If either one of the wires is broken or disconnected it scales off to the upper limit. If the connection is restored when the wires are hot, it may immediately scale down due to the wiring contact, but once the connection is secure it will perform stably according to the response time of the converter. |
In the case of a conditioner, the time constant indicates the response time.
Expressing this as a transfer function: it is expressed as:
OUT = IN * (1-eEXP(-t/T))
where OUT = output, IN = input, e = natural log, T = time constant, and t = time elapsed.
If the elapsed time is equal to the time constant, the e index is -1, and OUT becomes 63% of the value when IN changed.
If even more time passes, the index item approaches -infinity, and OUT equals IN. |
| Please use the MXT-A free programmable model. |
| It's not a comprehensive solution, but if you can specify the type of fuel oil the MTX-A free programmable model can do this. When changing the type, the compensation curve changes. |
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JUXTA Series Signal Conditioners |
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| If you can not find your answers here, please feel free to contact us. |
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